234420516 has 72 divisors (see below), whose sum is σ = 648595584. Its totient is φ = 70799040.

The previous prime is 234420509. The next prime is 234420517. The reversal of 234420516 is 615024432.

234420516 is a `hidden beast` number, since 234 + 420 + 5 + 1 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 234420516.

It is not an unprimeable number, because it can be changed into a prime (234420517) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 144526 + ... + 146138.

It is an arithmetic number, because the mean of its divisors is an integer number (9008272).

Almost surely, 2^234420516 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 234420516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (324297792).

234420516 is an abundant number, since it is smaller than the sum of its proper divisors (414175068).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

234420516 is a wasteful number, since it uses less digits than its factorization.

234420516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2001 (or 1996 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 234420516 is about 15310.7973665646. The cubic root of 234420516 is about 616.5929278601.

Adding to 234420516 its reverse (615024432), we get a palindrome (849444948).

The spelling of 234420516 in words is "two hundred thirty-four million, four hundred twenty thousand, five hundred sixteen".